Umbrella



FIG. 1 is a perspective view of a first embodiment of an umbrellaaccording to the present invention;

FIG. 2 is a bottom view thereof of the first embodiment;

FIG. 3 is a perspective view of a second embodiment of an umbrellaaccording to the present invention;

FIG. 4 is a bottom view thereof of the second embodiment;

FIG. 5 is a perspective view of a third embodiment of an umbrellaaccording to the present invention;

FIG. 6 is a bottom view thereof of the third embodiment;

FIG. 7 is a perspective view of a fourth embodiment of an umbrellaaccording to the present invention;

FIG. 8 is a bottom view thereof of the fourth embodiment;

FIG. 9 is a perspective view of a fifth embodiment of an umbrellaaccording to the present invention; and,

FIG. 10 is a bottom view thereof of the fifth embodiment.

The broken lines depict portions of the article that form no part of theclaimed design.

CLAIM The ornamental design for an umbrella, as shown and described.